JP4681967B2 - Sewing sewing machine - Google Patents

Description

  The present invention relates to a bead stitch sewing machine that performs bead stitching on a fabric and overlaps the stitched fabric.

The bead stitch sewing machine has a cloth feed mechanism that conveys the body cloth on the sewing machine table with a large presser from above, a two-needle sewing machine body that applies two seams parallel to the conveyed cloth, and seams. A corner knife mechanism for forming a cut at both ends of the sewing machine and a stacker mechanism for stacking the sewn fabric on the side of the sewing machine table (for example, see Patent Document 1). There are various types of stacker mechanisms, but it is common to stack the fabrics by moving the fabrics in the direction perpendicular to the transport direction of the fabric feed mechanism. In a conventional bead stitch sewing machine, a cut is formed in a cloth by a corner knife mechanism after sewing, and the cloth is conveyed by a predetermined amount from the position by a cloth feed mechanism and stacked by a stacker device. Therefore, as shown in the plan view of FIG. 8, when the right body fabric 600 and the left body fabric 601 are alternately sewn, the right body fabric 600 and the left body fabric 601 are stacked with the cut line 602 overlapping. It is done. In FIG. 8, an arrow D represents the conveyance direction by the cloth feed mechanism.
JP 2001-327778 A

  However, since the distance from the end of the right body fabric 600 to the cut differs from the distance from the end of the left body fabric 601 to the cut, there is a problem that the positions of the left and right body fabrics 600, 601 are not aligned. For this reason, when a large amount of body material 600, 601 is stacked, the body material 600, 601 may collapse.

  Accordingly, an object of the present invention is to provide an edge stitch sewing machine capable of aligning the positions of fabrics when the fabrics that have been sewn are sequentially stacked.

  The invention according to claim 1 is a cloth feed mechanism that transports the cloth by moving a presser that presses the cloth against the sewing machine table in the transport direction, and a needle bar that moves up and down while holding two needles at the lower end. A sewing machine main body that forms two seams with respect to the cloth conveyed by the cloth feed mechanism, and the cloth body that is disposed in the vicinity of the needle bar when the cloth is fed by the cloth feed mechanism. A center knife mechanism provided with a center knife for forming a linear cut between the stitches of the book, and the two stitches and the straight line arranged on the downstream side in the transport direction from the two needles and the center knife. A corner knife mechanism for forming substantially V-shaped cuts that are continuous with the straight cuts at both longitudinal ends of the straight cuts with respect to the dough having the cuts; A cloth receiving portion arranged in parallel with the sewing machine, and the cloth sewn by the sewing machine body, the cloth feeding mechanism, the center knife mechanism and the corner knife mechanism from the sewing machine table to the cloth receiving section. A stacker mechanism having a fabric moving member to be stacked; and controlling the sewing machine main body and each mechanism to perform the sewing process on the fabric, and controlling the cloth feeding mechanism to control the cloth feed mechanism. And a control means for controlling the stacker mechanism to superimpose the fabric conveyed to the discharge position on the fabric receiving portion, wherein the fabric is fed by the cloth feed mechanism. A sensor that detects an edge of the fabric when the fabric is conveyed, and the fabric is discharged after the sensor detects the edge of the fabric. Storage means for storing conveyance amount data for specifying the conveyance amount of the fabric until reaching the position, and the control means stores the conveyance after the formation of the V-shaped cut by the corner knife mechanism. The cloth feeding mechanism is controlled based on the quantity data, and the cloth is conveyed to the discharge position so that the edges of the cloth are aligned.

  According to a second aspect of the present invention, in the edge stitch sewing machine according to the first aspect of the present invention, the sewing machine further comprises setting means for setting the transport amount data.

  The invention according to claim 3 is the ball stitching sewing machine according to claim 1 or 2, wherein the sensor is disposed on the downstream side in the transport direction from the sewing machine body, and the sensor is further provided on the sewing machine table from above. It is a sensor that detects that the fabric has run out.

  According to a fourth aspect of the present invention, in the edge stitch sewing machine according to any one of the first to third aspects, the control means sets the transport amount data for each sewing pattern.

  According to the first aspect of the present invention, the conveyance amount data for specifying the conveyance amount with reference to the edge of the fabric detected by the sensor is stored, and the control unit sets the cloth feed mechanism based on the stored conveyance amount data. When controlled, the dough is conveyed to the discharge position of the stacker mechanism, and the dough is stacked with the edges of the dough aligned at the discharge position of the stacker mechanism. Therefore, a large amount of dough can be stacked without the dough being sequentially stacked.

  According to the invention which concerns on Claim 2, the numerical value which specifies conveyance amount can be set.

  According to the third aspect of the invention, since the sensor also serves as a sensor for detecting the absence of the cloth on the sewing table, the edge of the cloth is aligned at the discharge position of the stacker mechanism without increasing the number of parts. The dough is stacked in the state.

  According to the invention which concerns on Claim 4, the position to pile up for every sewing pattern can be set.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  As shown in FIGS. 1 to 4, the edge stitch sewing machine 1 includes a sewing machine table 2 that is a sewing work table, and a ball mount table 3 and a flap table 4 that are arranged above the front portion of the sewing machine table 2. In order to place the ball cloth T placed on the ball cloth placing table 3 on the body cloth M (cloth) on the sewing machine table 2 and maintain the folded state of the ball cloth T in an inverted T shape. The body cloth M is conveyed by transporting the large pressers 17 and 17 from the front to the back while the body cloth M placed on the sewing machine table 2 is pressed against the sewing machine table 2 by the large pressers 17 and 17. The fabric feed mechanism 5 that transports the fabric and the body fabric M that is transported from the front to the back by the fabric feed mechanism 5 are formed with two seams parallel to the back side of the ball placing table 3 and the flap placing table 4. 2-needle sewing machine body 7 and body cloth M feed the cloth A center knife mechanism provided with a center knife 15 for forming a linear cut between two stitches when fed by the structure 5 and a straight line at both ends of the linear cut behind the two-needle sewing machine body 7 A corner knife mechanism 8 that forms a V-shaped cut continuous with the cut, a stacker mechanism 9 that discharges the finished body material M from the sewing machine table 2 to the right side and stacks it on the right side of the sewing machine table 2, and a two-needle sewing machine A control device for controlling the main body 7, the cloth feed mechanism 5, the center knife mechanism and the corner knife mechanism 8 to perform sewing processing on the body cloth M, and transporting and stacking the sewing processed cloth to the discharge position of the stacker mechanism 9. 70.

  The sewing machine table 2 has a flat upper surface, and a long notch 10 is formed in the rear part of the sewing machine table 2 in the front-rear direction. A two-needle sewing machine body 7 is provided in front of the notch 10. The two-needle sewing machine body 7 includes a bed 11 provided under the sewing machine table 2, a vertical trunk 12 standing at the left end of the bed 11, and the bed 11 from the upper end of the vertical trunk 12. Arm portion 13 extending rightward so as to be parallel to the arm portion, two needle bars 14a, 14a that are arranged side by side at the right end portion of arm portion 13 and that extend downward from arm portion 13, and needle Needles 14b and 14b held at the lower ends of the rods 14a and 14a, and a hook device provided in the bed portion 11 just below the needles 14b and 14b, respectively. Further, the two-needle sewing machine body 7 is provided with a sewing machine motor 16, and the rotational movement of the sewing machine motor 16 is converted into the vertical movement of the needles 14b, 14b by the conversion mechanism, and the rotational movement of the sewing machine motor 16 is further converted by the transmission mechanism. It is transmitted to the hook device. Two seams are formed by the cooperation of the needles 14b, 14b and the respective hook devices.

  The center knife mechanism has a center knife 15 that forms a linear cut between two stitches. The center knife 15 extends approximately downward from the arm 13 on the rear side of the needles 14b and 14b, approximately in the middle of the two needles 14b and 14b. Further, the center knife mechanism includes a conversion mechanism that converts the rotational movement of the sewing machine motor 16 into the vertical movement of the center knife 15. When the center knife 15 is moved up and down by the conversion mechanism when the body cloth M is fed by the cloth feed mechanism 5, a straight cut is formed by the center knife 15 between the two stitches.

  On the front left side of the needles 14b and 14b, a ball placing table 3 is provided, and on the front right side of the needles 14b and 14b, a flap mounting table 4 is provided. Further, in front of the needles 14b and 14b, reciprocating movement is performed between a position contacting the sewing machine table 2 and a position contacting the table mounting table 3 between the table mounting table 3 and the flap mounting table 4. A binder 6 is provided. On the lower surface of the binder 6, a ball cloth T is stuck by a plurality of needles or suction force. The binder 6 is driven by an air cylinder 41 for driving the binder, and the air pressure supplied to the air cylinder 41 is controlled by an electromagnetic valve 42.

  Further, a flap transfer mechanism is provided in the vicinity of the flap mounting table 4 for transferring the flaps mounted on the flap mounting table 4 onto the ball cloth T on the body cloth M.

  The cloth feed mechanism 5 includes a pair of large pressers 17 and 17 that press the body cloth M on the left and right sides of the needle 14b, a support 18 that supports the large pressers 17 and 17 so as to be movable up and down, and a support 18. The air cylinder 19 that moves the large pressers 17, 17 up and down, the feed motor 20 that moves the large pressers 17, 17 back and forth, and the rotational movement of the feed motor 20 in the longitudinal direction of the support 18 A ball screw transmission mechanism 21 for converting into motion and an electromagnetic valve 22 for controlling the air pressure supplied to the air cylinder 19 are provided. 1 to 3, the front, rear, left, and right directions are indicated by arrows. During sewing, the cloth feed mechanism 5 presses the body cloth M with the large pressers 17 and 17 to move the large pressers 17 and 17 from the front to the rear. Thus, the body material M is conveyed, so that the front side is upstream in the conveyance direction and the rear side is downstream in the conveyance direction.

  The left and right large pressers 17 are respectively provided with cloth folding plates 23 for folding the ball cloth T around the binder 6 in accordance with the shape of the binder 6. A reflective tape 62 is attached to the right cloth folding plate 23 along the moving direction of the large presser 17. Note that the flaps conveyed by the flap transfer mechanism are stacked on the reflective tape 62.

  A flap sensor 61 is provided on the arm 13 of the two-needle sewing machine body 7 in front of the needle 14b. The flap sensor 61 is on the track of the reflective tape 62 as the large presser 17 moves back and forth. The flap sensor 61 has a light projecting element that projects light downward and a light receiving element that receives light from below, and is turned on when the reflected light from the reflective tape 62 is received, and receives the reflected light. Turns off if not. Therefore, even if there is a reflective tape 62 under the flap sensor 61, when the flap is overlaid on the reflective tape 62, the reflected light does not enter the flap sensor 61, so that the flap sensor 61 is turned off. The flap is detected by the flap sensor 61. Here, when the flap passes from the front to the rear under the flap sensor 61, when the flap sensor 61 is turned off from on, the edge on the rear side (downstream in the transport direction) of the flap is detected, and the flap sensor 61 When turned on from off, the front edge of the flap (upstream in the conveying direction) is detected. Accordingly, a detection signal indicating that the edge of the flap F has been detected by the flap sensor 61 is output to the control device 70.

  A sensor 60 is provided in front of the two-needle sewing machine body 7 and above the sewing machine table 2 so as to be disengaged from right above the track of the large presser 17. The sensor 60 is, for example, a photo sensor or a proximity sensor, and detects the edge of the body cloth M located below. Here, when the body cloth M passes from the front to the back under the sensor 60, when the sensor 60 is turned from OFF to ON, the rear edge (downstream in the transport direction) of the body cloth M is detected. When is turned from on to off, the front edge (upstream in the conveying direction) of the body cloth M is detected. Accordingly, a detection signal indicating that the edge of the body cloth M has been detected by the sensor 60 is output to the control device 70.

  The corner knife mechanism 8 is disposed downstream of the needles 14b and 14b and the center knife 15 in the transport direction. The corner knife mechanism 8 includes a corner knife 24 provided on the front side in the notch 10 of the sewing table 2, a corner knife 25 provided on the rear side in the notch 10 of the sewing table 2, and the corner knife 24. An air cylinder 26 for raising and lowering, an air cylinder 27 for raising and lowering the corner knife 25, electromagnetic valves 28 and 29 for controlling air pressure supplied to the air cylinders 26 and 27, and a drive motor 30 for moving the corner knife 25 back and forth. Is provided. The corner knife mechanism 8 adjusts the distance along the front and rear of the corner knife 24, 25 formed in a substantially V shape when viewed from above by the drive motor 30, and the corner knife 24, 25 is lifted by the air cylinders 26, 27. Thus, substantially V-shaped cuts that are continuous with the straight cuts are formed at both ends in the longitudinal direction of the straight cuts.

  The stacker mechanism 9 includes a cloth receiving bar 31, a cloth stopper bar 32, a cloth wiper bar 33, and a cloth disposed substantially parallel to the side of the sewing machine table 2 by the cloth feeding mechanism 5 and the feeding direction (conveying direction) of the body cloth M. A moving bar 34 is provided. The fabric receiving bar 31 is fixed to the right side of the sewing machine table 2 and below the upper surface of the sewing machine table 2. The dough retaining bar 32 is located above the dough receiving bar 31 and can be contacted and separated in the vertical direction with respect to the dough receiving bar 31 by a link mechanism. The cloth wiping bar 33 and the cloth movement bar 34 are located between the cloth receiving bar 31 and the sewing machine table 2, and the cloth wiping bar 33 is closer to the cloth receiving bar 31 than the cloth movement bar 34. The cloth wiping bar 33 and the cloth moving bar 34 are movable in the opposite direction from the sewing machine table 2 toward the cloth receiving bar 31 in a state of being close to each other. Further, the cloth moving bar 34 crosses the cloth wiping bar 33 and the cloth movement receiving bar 31 separately from the cloth wiping bar 33 by the link mechanism in the right and left direction (perpendicular to the conveying direction by the cloth feeding mechanism 5). Yes. The fabric receiving bar 31 constitutes a fabric receiving member, and the fabric wiper bar 33 and the fabric moving bar 34 constitute a fabric moving member.

  The stacker mechanism 9 also includes an air cylinder 35 that moves the fabric stop bar 32 up and down, an electromagnetic valve 36 that controls the air pressure supplied to the air cylinder 35, a fabric wiper bar 33, and a fabric movement bar 34 from the sewing machine table 2. An air cylinder 37 that moves further toward the cloth receiving bar 31, an electromagnetic valve 38 that controls the air pressure supplied to the air cylinder 37, and a cloth moving bar 34 on the cloth wiper bar 33 and the cloth receiving bar 31. An air cylinder 39 that moves left and right and an electromagnetic valve 40 that controls the air pressure supplied to the air cylinder 39 are provided.

  The control device 70 includes a CPU 71, a RAM 72, a ROM 73, a drive circuit 74, and the like. The ROM 73 stores a program for controlling the sewing machine motor 16, the feed motor 20, the drive motor 30, and the electromagnetic valves 22, 28, 29, 36, 38, and 40. The RAM 72 is a memory for providing a work area to the CPU 71. The CPU 71 performs processing according to a control program stored in the ROM 73 using the RAM 72 as a work area. The drive circuit 74 drives the sewing machine motor 16, the feed motor 20, the drive motor 30, and the solenoid valves 22, 28, 29, 36, 38, 40 according to the processing of the CPU 71.

  The ROM 73 stores pattern data related to a plurality of sewing patterns, and stores conveyance amount data described later associated with the respective sewing patterns. The data relating to the sewing pattern is data such as a sewing pitch, a sewing length, and a length of a linear cut.

  An operation panel 75 is connected to the control device 70. The operation panel 75 serves as a control device 70 for a signal corresponding to the operation content of the operator. Thereby, the operator can set any sewing pattern from a plurality of sewing patterns.

  The control device 70 controls the sewing machine motor 16, the feed motor 20, the drive motor 30, and the electromagnetic valves 22, 28, 29, 36, 38, 40 according to the sewing pattern related to the sewing pattern selected by the operation panel 75. Further, when the control device 70 inputs a detection signal from the sensor 60 while the body cloth M is being conveyed by the cloth feed mechanism 5, the control device 70 uses the position of the edge of the body cloth M detected by the sensor 60 as a reference. The conveyance amount data for specifying the conveyance amount from the position is stored. Further, the control device 70 controls the feed motor 20 of the cloth feed mechanism 5 based on the stored carry amount data, and after the V-shaped cut is formed by the corner knife mechanism 8, the edge of the body cloth M is detected. The garment fabric M sewn with the tart T and the flap F so as to be aligned is conveyed to the discharge position of the stacker mechanism 9. Here, the transport amount data of the body cloth M from when the edge of the body cloth M is detected by the sensor 60 until the edge reaches the discharge position of the stacker mechanism 9 is the sewing pattern selected by the operation panel 75. This is the transport amount corresponding to. The control device 70 uses the position of the edge of the body cloth M detected by the sensor 60 as a reference based on the conveyance amount data described above, from the cutting position by the corner knife mechanism 8 to the discharging position of the stacker mechanism 9. After the amount of conveyance is calculated and the feed motor 20 of the cloth feed mechanism 5 is controlled based on the amount of conveyance, and the V-shaped cut is formed by the corner knife mechanism 8, the body body M is aligned so that the edges of the body cloth M are aligned. The fabric M may be conveyed to the discharge position of the stacker mechanism 9.

Next, the operation of the edge stitch sewing machine 1 will be described with reference to FIGS.
When the operator turns on the power of the ball stitching sewing machine 1 and the operator sets a sewing pattern by operating the operation panel 75, the control device 70 reads the conveyance amount data corresponding to the set sewing pattern and reads it into the RAM 72. Temporarily store (step S1). The carry amount data may be set by the operator operating the operation panel 75.

  Then, the operator places the body cloth M on the sewing machine table 2 in front of the two-needle sewing machine body 7, places the ball cloth T on the drape table 3, and places the flap on the flap table 4. (Step S2). Here, the body cloth M is placed on the sewing table 2 so that the body cloth M extends from the right end of the sewing machine table 2, and a part of the body cloth M is suspended from the sewing machine table 2.

  Then, when the operator operates the start switch, the control device 70 controls the electromagnetic valves 36, 38, and 40, whereby the fabric stop bar 32 is lowered by the air cylinder 35 and the fabric moving bar 34 is operated by the air cylinder 39. Moves to the left of the cloth receiving bar 31 and approaches the cloth wiping bar 33, and the cloth wiping bar 33 and the cloth moving bar 34 are moved below the sewing machine table 2 by the air cylinder 37 (FIG. 6A). Then, the control device 70 controls the feed motor 20 and the electromagnetic valve 22, so that the large pressers 17, 17 are moved forward by the feed motor 20, and the large pressers 17, 17 are lowered by the air cylinder 19. The fabric M is pressed by the large pressers 17 and 17. Next, when the control device 70 controls the electromagnetic valve 42, the binder 6 is operated by the air cylinder 41, and the ball cloth T placed on the ball placing table 3 is moved between the large pressers 17 and 17 by the binder 6. In the body material M. Then, the ball cloth T is bent by the cloth folding plate 23 so as to be wound around the binder 6. Next, the flap on the flap mounting table 4 is transferred by the flap transfer mechanism.

  Next, when the control device 70 controls the feed motor 20, the large pressers 17 and 17 are moved to the sewing start position by the feed motor 20 (step S3). Subsequently, when the control device 70 controls the feed motor 20 and the sewing machine motor 16, the needles 14b and 14b and the center knife 15 are moved up and down by the sewing machine motor 16 while the large pressers 17 and 17 are moved backward, and the shuttle device. Rotates. The needles 14b, 14b and the shuttle device cooperate with each other while the garment fabric M, the tart cloth T and the flap F are fed rearward by the large pressers 17, 17, so that two parallel seams are formed in the garment fabric M, the tart cloth T. Then, the webbing T and the flap F are formed on the body cloth M by being formed on the flap F, and a straight cut is formed between the two stitches by the center knife 15 (step S4). Further, when the body cloth M is fed backward by the large pressers 17, 17, the hanging part of the body cloth M enters between the cloth receiving bar 31 and the cloth wiper bar 33.

  Then, when the edge of the body cloth M is detected by the sensor 60 while the body cloth M is being fed backward during sewing (step S5: Yes), the edge of the body cloth M detected by the control device 70 is detected. The conveyance amount of the body cloth M starts to be counted and stored with reference to the edge position (step S6). In addition, as a specific configuration for counting the conveyance amount of the body cloth M, for example, when a pulse motor is used as the feed motor 20, the number of pulses output to the pulse motor after the edge of the body cloth M is detected is set as follows. You only have to count. Further, when a servo motor is used as the feed motor 20, for example, the number of encoder pulses provided in the servo motor may be counted after the body cloth M is detected.

  When the formation of the two stitches and the linear cut is finished by the two-needle sewing machine body 7, the control device 70 stops the sewing machine motor 16 (step S7). When the body cloth M continues to move rearward by the feed motor 20 and the two stitches are positioned on the notch 10, the control device 70 stops the feed motor 20 (step S8). Then, when the control device 70 controls the drive motor 30 and the solenoid valves 28 and 29, the distance between the corner knife 24 and the corner knife 25 is adjusted by the drive motor 30, and the corner knife 24 is arranged at the front end of the straight cut. The corner knife 25 is positioned below the rear end of the straight cut, and the corner knife 24, 25 is raised by the air cylinders 26, 27 (step S9). As a result, V-shaped cuts are formed at both ends of the straight cut.

  Thereafter, the control device 70 calculates the transport amount from the position where the V-shaped cut is formed to the discharge position based on the transport amount data read in step S1 and the count value started in step S6. The conveyance amount of the body material M is started to be counted with reference to the position where the V-shaped cut is formed (step S10).

  Thereafter, the control device 70 controls the feed motor 20 to feed the large pressers 17 and 17 and the body cloth M backward (step S11). When the carry amount from the start of counting in step S6 becomes the carry amount data stored in the RAM 72, the position of the edge of the body cloth M becomes the discharge position of the stacker mechanism 9 (step S12: Yes), and the control device 70 Stops the feed motor 20. In this case, the fact that the position of the edge of the body cloth M is the discharge position of the stacker mechanism 9 is that the transport amount from the start of counting in step S10 is the transport amount calculated in step S10. If it is determined, but the conveyance direction is the same before and after the formation of the V-shaped cut, the process of step S10 is omitted, and the count value after the count is started in step S6 and in step S12. The comparison with the read transport amount data may be made in step S12. .

  Next, the edge stitch sewing machine 1 performs a stacker operation (step S13). Specifically, the operation is as follows. When the control device 70 controls the solenoid valve 38, the cloth discharge bar 33 and the cloth movement bar 34 are moved toward the cloth receiving bar 31 by the air cylinder 37, and the hanging part of the body cloth M is the cloth discharging bar 33 and the cloth receiving bar. It is sandwiched between the bars 31 (FIG. 6B). Next, when the control device 70 controls the solenoid valve 22 and the solenoid valve 36, the fabric retaining bar 32 is lifted by the air cylinder 35 and separated from the fabric receiving bar 31, and the large pressers 17 and 17 are lifted by the air cylinder 19. To do. (FIG. 6C). Next, when the control device 70 controls the electromagnetic valve 40, the fabric movement bar 34 moves between the fabric stop bar 32 and the fabric receiving bar 31 as indicated by an arrow A in FIG. Since the cloth movement bar 34 crosses over the cloth receiving bar 31 and pays the body cloth M, the portion of the body cloth M placed on the sewing machine table 2 is pulled by the cloth movement bar 34. M is hung on the dough receiving bar 31. At this time, since the body cloth M is sandwiched between the cloth receiving bar 31 and the cloth wiping bar 33, the body cloth M does not fall off the cloth receiving bar 31. When the body cloth M is moved from the sewing machine table 2 to the cloth receiving bar 31, the body cloth M is no longer detected by the sensor 60, so that the controller 70 indicates that the body cloth M has disappeared from the sewing table 2. Be recognized. Next, when the control device 70 controls the electromagnetic valve 40, the cloth moving bar 34 crosses over the cloth receiving bar 31 by the air cylinder 39 as shown by an arrow B in FIG. Next, when the control device 70 controls the electromagnetic valve 36, the fabric retaining bar 32 is lowered by the air cylinder 35, and the body fabric M is sandwiched between the fabric receiving bar 31 and the fabric retaining bar 32. Next, when the control device 70 controls the electromagnetic valve 38, the fabric wiping bar 33 and the fabric moving bar 34 are moved by the air cylinder 37 and moved below the sewing machine table 2 (FIG. 6 (e)). The above is the stacker operation of the edge stitch sewing machine 1.

  When the stacking of the body material M is completed, the operator places the next body material material on the sewing machine table 2 in front of the two-needle sewing machine body 7, and the operator operates the start switch in the same manner. The garment T and the flap F are sewn on the garment fabric, and the garment fabric is overlaid so that the end of the next garment fabric is aligned with the edge of the previous garment fabric M hung on the fabric receiving bar 31.

  As described above, according to the present embodiment, when the edge of the body material M is detected by the sensor 60, the control device 70 stops the feed motor 20 based on the detection, and the electromagnetic valves 36, 38, 40 are turned on. Since the control is performed, the position of the edge of the body cloth M when the body cloths are stacked by the stacker mechanism 9 becomes uniform. Therefore, as shown in FIG. 7, when the left body cloth 500 and the right body cloth 501 are alternately sewed with a drape, the right body cloth 500 and the left body cloth 501 are aligned with the edges aligned. Since they are stacked on the receiving bar 31, the stacked body fabrics 500 and 501 can be stacked without collapsing them. Here, in FIG. 7, an arrow C represents the downstream in the conveyance direction by the cloth feeding mechanism 5.

In addition, this invention is not limited to the said embodiment, You may perform a various improvement and change of a design in the range which does not deviate from the meaning of this invention.
In the above embodiment, the edge of the body cloth M is detected by the sensor 60 and the control by the control device 70 is performed based on the detected position. However, the edge of the body cloth M is detected by the flap sensor 61. The control device 70 may perform control based on the detected position.

  Further, in the above embodiment, after the body cloth is detected as the transport amount data for specifying the transport amount from when the edge of the body cloth M is detected by the sensor 60 until the body cloth M reaches the discharge position. However, the discharge position data based on the position where the body cloth M is detected by the sensor 60 may be stored as the conveyance amount data.

1 is a perspective view showing a schematic configuration of a bead stitch sewing machine 1; 1 is a side view showing a schematic configuration of a bead stitch sewing machine 1; 1 is a top view showing a schematic configuration of a bead stitch sewing machine 1; FIG. 1 is a block diagram of a bead stitch sewing machine 1. FIG. 3 is a flowchart showing an operation sequence of the edge stitch sewing machine 1. FIG. 10 is a rear view showing the operation of the stacker mechanism 9. 1 is a diagram showing a fabric in a state of being stacked by a stacker mechanism 9 of a bead stitch sewing machine 1. It is drawing which showed the cloth | dough of the state piled up by the stacker mechanism of the conventional bead stitch sewing machine.

Explanation of symbols

1 Sewing machine 2 Sewing table 5 Cloth feed mechanism 7 Double needle sewing machine body 8 Corner knife mechanism 9 Stacker mechanism 15 Center knife 17 Large presser foot (presser foot)
31 Dough receiving bar (Dough receiving part)
34 Dough moving bar (Dough moving member)
60 sensor 70 control device (control means, calculation means)

Claims (4)

A cloth feed mechanism for transporting the fabric by moving a presser for pressing the fabric against the sewing machine table in the transport direction;
A sewing machine main body having a needle bar that is moved up and down while holding two needles at the lower end, and that forms two seams on the fabric conveyed by the cloth feed mechanism;
A center knife mechanism provided with a center knife that forms a linear cut between the two seams when the fabric is fed by the cloth feed mechanism and is disposed in the vicinity of the needle bar;
The straight line is arranged at both ends in the longitudinal direction of the straight cut with respect to the fabric having the two stitches and the straight cut formed on the downstream side in the transport direction from the two needles and the center knife. A corner knife mechanism that forms a substantially V-shaped cut continuous with the cut;
A cloth receiving portion disposed on the side of the sewing machine table and parallel to the conveying direction, and the cloth body sewn by the sewing machine body, the cloth feed mechanism, the center knife mechanism, and the corner knife mechanism from above the sewing table. A stacker mechanism having a fabric moving member that discharges and overlaps the fabric receiving portion;
The sewing machine body and each mechanism are controlled to perform the sewing process on the cloth, and the cloth processed by the sewing process is transported to the discharge position of the stacker mechanism, and the stacker mechanism is In a hem sewing machine comprising a control means for superimposing the fabric conveyed to the discharge position on the fabric receiving portion,
A sensor for detecting an edge of the fabric when the fabric is conveyed by the fabric feed mechanism;
Storage means for storing conveyance amount data for specifying a conveyance amount of the fabric from when the edge of the fabric is detected by the sensor to when the fabric reaches the discharge position;
The control means controls the cloth feeding mechanism on the basis of the stored conveyance amount data after the V-shaped cut is formed by the corner knife mechanism, and the cloth is arranged so that the edges of the cloth are aligned. An edge stitch sewing machine characterized by being conveyed to a discharge position.   2. The edge stitch sewing machine according to claim 1, further comprising setting means for setting the transport amount data.   3. The sensor according to claim 1, wherein the sensor is disposed on the downstream side in the transport direction from the sewing machine body, and the sensor is a sensor that detects that the cloth is removed from the sewing machine table. The rim stitch sewing machine described.   The edge stitch sewing machine according to any one of claims 1 to 3, wherein the control means sets the conveyance amount data for each sewing pattern.

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